When it comes to choosing the best winter mid layer, it's all about getting the right balance of warmth, breathability and movement, and the women's Millennium Yakwarm full-zip mid layer top by ODLO delivers on all three. Part of the premium Yakwarm series, this high-performance top boasts superb natural warming properties thanks to the yak wool fibres mixed into the fabric, which also offer enhanced breathability and help to fight unpleasant odours. The stretch fleece has been cut in an athletic fit, which allows for a full range of movement and is ideal for layering without extra bulk. The zippered hand pockets offer additional warmth when you need it. Don’t let the cold weather be an excuse this winter, upgrade your layering system with ODLO’s Millennium Yakwarm full-zip mid layer top.